Tula and the Hornady steel match ammo in 308 have problems with both a hard and deeply set primer.
I cant speak specifically to the Tula loading, but the Hornady steel match ammo, per Hornady is Tula steel case and Tula primers. The Tula primer is set deep and hard for use in semi auto rifles (M1a, G3, FAL, etc) that have longer firing pin protrusion. My own experience with Hornady steel match and the phone/email conversations with customer support all pointed to too short of firing pin protrusion in my rifle being the cause of failure to light. I had similar "light" strikes on primers, and these same rounds wouldn't light if I tried to re-fire them.
Hornady took care of me on this by sending me replacement ammo other then steel match.
I have seen others shooting Tula ammo have the same problem, and I feel it isn't a light strike so much as a too short firing pin to reliably light off this loading.